The == operator is both a numeric and string operator, meaning it can be used for both numbers and text. For example, both of the following statements would be valid where statements:| where ResultType == 0 | where Category == 'SignInLogs'...
If the data in the indexed view covers all or part of the Transact-SQL statement, and the Query Optimizer determines that an index on the view is the low-cost access path, the Query Optimizer will choose the index regardless of whether the view is referenced by name in the query....
Hints that are placed on views in a query might conflict with other hints that are discovered when the view is expanded to access its base tables. When this occurs, the query returns an error. For example, consider the following view that contains a table hint in its definition:...
OperatorLeft OperandRight OperandMeaning x + ydatetimedurationDatetime offset by duration x + ydurationdatetimeDatetime offset by duration x - ydatetimedurationDatetime offset by negated duration x - ydatetimedatetimeDuration between datetimes The native type of datetime values is the intrinsic typedatet...
The meaning of the code in the expression is, return every customer in the Customers table in the database in the query results. Query expressions return a type that implements IQueryable<T> and IEnumerable<T>, and so they can be iterated using the Seq module as the example shows....
SQL statements are terminated only by the semicolon, meaning that more complex statements can be rendered across multiple lines, like this one: SELECTname,telephone,ageFROMcustomers; Copy This command selects the contents of the columns name, telephone and age in the table customers. ...
Outer joins specify whether to include data where no common value exists. Outer joins are directional, meaning you can specify whether to include all the records from the first table specified in the join (called a left join), or to include all the records from the second tabl...
Use this view to quickly access all currently forced plans. Queries With High VariationAnalyze queries with high-execution variation as it relates to any of the available dimensions, such as Duration, CPU time, IO, and Memory usage, in the desired time interval. ...
While the former approach has the advantage of hiding the query compilation cost during the compilation of the application, it imposes serious limitations: the queries must be expressed in the application code, meaning that a system that accepts queries as user input cannot leverage such an ...
they are also hard to read. The tools defined in this document are allsyntactic sugar, that is they make code easier for humans to read without (when implemented correctly) changing its meaning or effect. Namespaces are widely used. Query options abbreviations, IRI aliases, and typevars are ...